#define _CRT_SECURE_NO_WARNINGS 1
#include"string.h"
using namespace std;
int main() {
	fwx::string st1;
	st1.push_back('1');
	st1.push_back('1');
	st1.push_back('1');
	st1.push_back('1');
	st1.push_back('1');

	cout << st1.c_str() << endl;
	fwx::string st2 = st1.substr(2);
	cout << st2.c_str() << endl;
}